Created
June 16, 2016 11:57
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model | diskSpace | radius | |
---|---|---|---|
DE431 | 8 | 8 | |
DD342 | 16 | 18 |
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<!DOCTYPE html> | |
<meta charset="utf-8"> | |
<body> | |
<script src="//d3js.org/d3.v3.js"></script> | |
<script> | |
var width = 960, | |
height = 500, | |
padding = 1.5, // separation between same-color nodes | |
clusterPadding = 6, // separation between different-color nodes | |
maxRadius = 12; | |
var svg = d3.select("body").append("svg") | |
.attr("width", width) | |
.attr("height", height); | |
var n = 200, // total number of nodes | |
m = 10; // number of distinct clusters | |
var color = d3.scale.category10() | |
.domain(d3.range(m)); | |
// The largest node for each cluster. | |
var clusters = new Array(m); | |
var nodes = []; | |
d3.tsv('data.tsv', function (rows) { | |
nodes = rows.map(function (item) { | |
var i = item['diskSpace'], | |
r = +item['radius'], | |
d = { | |
cluster: i, | |
radius: r, | |
x: Math.cos(i / m * 2 * Math.PI) * 200 + width / 2 + Math.random(), | |
y: Math.sin(i / m * 2 * Math.PI) * 200 + height / 2 + Math.random() | |
}; | |
if (!clusters[i] || (r > clusters[i].radius)) { | |
clusters[i] = d; | |
} | |
return d; | |
}); | |
var force = d3.layout.force() | |
.nodes(nodes) | |
.size([width, height]) | |
.gravity(.02) | |
.charge(0) | |
.on("tick", tick) | |
.start(); | |
var node = svg.selectAll("circle") | |
.data(nodes) | |
.enter().append("circle") | |
.style("fill", function(d) { return color(d.cluster); }) | |
.call(force.drag); | |
node.transition() | |
.duration(750) | |
.delay(function(d, i) { return i * 5; }) | |
.attrTween("r", function(d) { | |
var i = d3.interpolate(0, d.radius); | |
return function(t) { return d.radius = i(t); }; | |
}); | |
function tick(e) { | |
node | |
.each(cluster(10 * e.alpha * e.alpha)) | |
.each(collide(.5)) | |
.attr("cx", function(d) { return d.x; }) | |
.attr("cy", function(d) { return d.y; }); | |
} | |
}); | |
// Move d to be adjacent to the cluster node. | |
function cluster(alpha) { | |
return function(d) { | |
var cluster = clusters[d.cluster]; | |
if (cluster === d) return; | |
var x = d.x - cluster.x, | |
y = d.y - cluster.y, | |
l = Math.sqrt(x * x + y * y), | |
r = d.radius + cluster.radius; | |
if (l != r) { | |
l = (l - r) / l * alpha; | |
d.x -= x *= l; | |
d.y -= y *= l; | |
cluster.x += x; | |
cluster.y += y; | |
} | |
}; | |
} | |
// Resolves collisions between d and all other circles. | |
function collide(alpha) { | |
var quadtree = d3.geom.quadtree(nodes); | |
return function(d) { | |
var r = d.radius + maxRadius + Math.max(padding, clusterPadding), | |
nx1 = d.x - r, | |
nx2 = d.x + r, | |
ny1 = d.y - r, | |
ny2 = d.y + r; | |
quadtree.visit(function(quad, x1, y1, x2, y2) { | |
if (quad.point && (quad.point !== d)) { | |
var x = d.x - quad.point.x, | |
y = d.y - quad.point.y, | |
l = Math.sqrt(x * x + y * y), | |
r = d.radius + quad.point.radius + (d.cluster === quad.point.cluster ? padding : clusterPadding); | |
if (l < r) { | |
l = (l - r) / l * alpha; | |
d.x -= x *= l; | |
d.y -= y *= l; | |
quad.point.x += x; | |
quad.point.y += y; | |
} | |
} | |
return x1 > nx2 || x2 < nx1 || y1 > ny2 || y2 < ny1; | |
}); | |
}; | |
} | |
</script> |
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